package org.malred.controller;


import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.malred.common.R;
import org.malred.entity.Employee;
import org.malred.service.EmployeeService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import java.time.LocalDateTime;

@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {
    @Autowired
    private EmployeeService employeeService;

    /**
     * 员工登录
     *
     * @param req
     * @param employee
     * @return
     */
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest req, @RequestBody Employee employee) {
        // md5加密密码
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        // 查询数据库
        LambdaQueryWrapper<Employee> qw = new LambdaQueryWrapper<>();
        qw.eq(Employee::getUsername, employee.getUsername());
        Employee emp = employeeService.getOne(qw);

        if (emp == null) {
            return R.error("登录失败");
        }

        // 密码对比
        if (!emp.getPassword().equals(password)) {
            return R.error("密码不正确");
        }

        // 员工状态
        if (emp.getStatus() == 0) {
            return R.error("账号已禁用");
        }

        req.getSession().setAttribute("employee", emp.getId());
        return R.success(emp);
    }

    /**
     * 员工退出登录
     *
     * @param request
     * @return
     */
    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request) {
        // 清理session中保存的当前登录员工的id
        request.getSession().removeAttribute("employee");
        return R.success("退出成功");
    }

    /**
     * 新增
     *
     * @param req
     * @param employee
     * @return
     */
    @PostMapping
    public R<String> save(HttpServletRequest req, @RequestBody Employee employee) {
        log.info("新增员工, 员工信息: {}", employee.toString());

        // 设置密码(初始, md5)
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));

        // 设置创建和更新时间
//        employee.setCreateTime(LocalDateTime.now());
//        employee.setUpdateTime(LocalDateTime.now());

        // 创建人(当前登录用户)
        Long empId = (Long) req.getSession().getAttribute("employee");
//        employee.setCreateUser(empId);
//        employee.setUpdateUser(empId);

        employeeService.save(employee);

        return R.success("新增员工成功");
    }

    /**
     * 员工信息分页查询
     *
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page, int pageSize, String name) {
        log.info("page = {},pageSize = {}, name = {}", page, pageSize, name);
        // 构造分页构造器
        Page pageInfo = new Page(page, pageSize);
        // 构造条件构造器
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper();
        // 如果name为空, 就不会添加该条件
        queryWrapper.like(StringUtils.isNotEmpty(name), Employee::getName, name);
        // 添加排序条件
        queryWrapper.orderByDesc(Employee::getUpdateTime);
        // 查询 -> 并存入pageInfo
        employeeService.page(pageInfo, queryWrapper);
        return R.success(pageInfo);
    }

    /**
     * 根据id修改员工信息
     */
    @PutMapping
    public R<String> update(HttpServletRequest request, @RequestBody Employee employee) {
        log.info(employee.toString());

        long id = Thread.currentThread().getId();
        log.info("线程id为: {}", id);

//        employee.setUpdateTime(LocalDateTime.now());
//        Long empId = (Long) request.getSession().getAttribute("employee");
//        employee.setUpdateUser(empId);

        employeeService.updateById(employee);

        return R.success("");
    }

    /**
     * 根据id获取员工信息
     *
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id) {
        log.info("根据id查询员工信息");
        Employee e = employeeService.getById(id);
        if (e != null) {
            return R.success(e);
        }
        return R.error("员工不存在");
    }
}
